Simple JavaScript program for Beginners

User to enter name and displaying the same name with welcome message
<script type="text/javascript" >
var str=window.prompt(" Enter your name ");
document.write(" Welcome " + str );
</script>
Print next 5 numbers of user entered digit
<script type="text/javascript" > var str=window.prompt(" Enter a number "); str=parseInt(str); for(i=str; i<str+5; i++){ document.write(i + "<br>"); } </script>
Print the user entered string in reverse order
<script type="text/javascript" >
var my_str=window.prompt("Enter your name");
var i=my_str.length;
i=i-1;
for (var x = i; x >=0; x--)
{
document.write(my_str.charAt(x));
}
</script>
Multiplication table of a user entered number
<script type="text/javascript" > var str=window.prompt(" Enter a number "); str=parseInt(str); for(i=1; i<=10; i++){ document.write(i * str + ","); } </script>
Sum of two numbers as entered by user
<script type='text/javascript'> var a,b,c; aVal=window.prompt("enter your first no."); bVal=window.prompt("enter your 2nd no."); a=parseInt( aVal); b=parseInt( bVal); result=a+b; document.writeln("the sum is: "+result); </script>



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